Silo contruction.



L. J. KREBS.

S |L0 CONSTRUCTION. APPLICATION Hun Nov.a0.191s.'

1 ,208,983 Patented Dec. 19, 1916.

2 SHEETS-SHEET 2.

alternan.`

and the like, p produce a simple UNITED STATES PATENT OFFICE.

LOUIS J'. KBEBS. 0F COFFEYYILLE, KANSAS.

SILO CONSTRUCTION.

Application ined November so, not.

To all 1li/wm it may concern Be it known that I, Loms J. Karies, acitizen of the United States, residing at Co'eyville, in the county oflllontgonxery and State of Kansas, have invented new and usefulImprovements in Silo Constructions, of which the following is aspecification.

This invention relates to the construction of Walls for storagestructures such as silos and it has for its object to and improved wallstruc` ture made of concrete blocks.

A further object of the invention is to produce reinforced concreteblocks ol a simple and improved construction whereby the same areparticularly adapted to bc utilized in the building of an arcuatewallstructure.

A further object of the invention is to simplify and improve the mannerof constructing and assembling the blocks to produce an arcuate wailstructure.

A further object of the invention is lo produce a wall structure of thecharacter described having door openings of a simple and improvedconstruction whereby great strength is secured and displacement of thebuilding blocks adjacent to the door open-- in is rendered practicallyimpossible.

Vith these and other ends 1n View which will readily appear as thenature of the invention is better understood, the same consists in theimproved construction and novel arrangement and combination of partswhich will be hereinafter fully described and particularly pointed outin the claim.

In the accompanying drawings has been illustrated a simple and preferredform of the invention, it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations and modifications within the scope of theclaim may be resorted to when desired.

In the drawings, Figure 1 is a perspective view showing two of thebuilding blocks utilized in the improved wall structure ready to beassembled. Fig. 2 is a vertical transverse sectional view taken on theline 2--2 in Fig. 1. Fig. 3 is a vertical longitudinal sectional viewtaken on the line 3MB in Fig. 2. Fig. 4 is a horizontal sectional Viewtaken on the line 4-4 in Fig. 3. Fig. 5 is a perspective View of one ofthe door oframes. Fig. 6 is a vertical sectional view Speclcation ofLetters Patent.

.proximate block.

Patented Dec. 19, 1916. serial No. 64,291.

of the same taken on the line lli-6 in Fig. 5. Fig. 7 is a horizontalsectional view taken on the line 7 7 in Fig. Fig. 8 is an elevation of aportion of a wall constructed in accordance with the invention. Fig. 9is a horizontal sectional view taken on the line 9-9 in Fig: 8. Figs. 10and 11 are perspective detail views of two half blocks of specialconstruction used adjacent to the door frame.

Corrcspmlding parts in the Several figures are denoted by likecharacters of reference.

The improved building block 15, which is oi arc-shape to correspond withthe curvature of the wall structure to be erected,`is provided atdiagonally opposite corners with projecting lugs or extensions 16 havingverticalpcrforations 17 extending therethroughl The block 15 is moldedof concrete or cement composition in substantially the shape shownhaving upper and lower substantially parallel horizontal walls 18, 1.9,one of which is provided with a longitudinal groove 20, while the otherhorizontal ivnll is curved or rounded to produce a rib 2l. meshing withthe groove 20 of a Embedded in each block are two horizontal reinforcingrods E22, each having a terminal eye 23 coinciding with the aperture l?in one of the extensions 16. Each reinforcing rod 22 is bent at itsoppositeend to form an angular projection or hook 24 which serves toprevent longitudinal displacement of the rod relatively to the materialof which the block is composed.

The door frames 25 used` in connection with the improved wall structureare molded of concrete or cement composition, each 0f said door framesbeing of rectangular form and provided in the top and bottom portionsthereof with grooves 26 having front and rear walls Q6', Q6, and in theside portions thereof with similar grooves 27 llaving front and rearwalls 27', 27". Each concrete frame 2li is of a thickness considerablyexceeding the thickness ofthe building blocks, and the grooves 26, 27are made of a width coinciding with the thickness of the building blockswhich are received in Said grooves between the front and rear wallsthereof. Embedded in each concrete 'frame are rectangoilar metallicreinforcing frames 98 ano a plurality of bolts 29, said bolts havingthreaded portions that protrude be- Lvond thc forward face of the doorframe,

said, bolts serving for the attachment of led` der rungs 30 such as arecommonly used 1n silos lond similar Structures.

Fo`use edjeoent to the sides of the door frames, in order to enable thecourses of blocks to be properly leid in such fashion that the blocks ofalternate courses will breuk joints, there is provided half blocks 31,32 of special construction, each of said blocks having a lateral lug orextension. 33 at one corner thereof, said extension or pro. jectionbeing provided with a vertical aperture 34. Euch of the half biocks isprovided with an' angular reinforcing rod 35 having un eye 36 coincidingwith the epee ture The horizontal faces of the half jblockiare provided,respectively, `with u groove 37 and a rib 38, corresponding to the"grooves 20 lend the ribs 21. et' the blocks 15.

In assembling the blocks to form e. wall "structure, the said blocks arelaid in regular courses, the projections 1G of the blocks in each coursebeing overlapped, thus bring;- ing the apertures 1.7 Yof the reepeetiveprojections into registry, the blocks being then connected by u rod orwire Bil which is dropped through the apertures of the overlappedprojections, such rod beingT obviously engaged with the eyes of thereinforcing rods Thin cement or mortar, commonly known as runny may bepoured into the perforetions to cause the rods to become firmlyembedded. The blocks of each course are arranged to break joints withthe blocks of the course beiow, and seid blocks ere. furthermore,assembled by 'the interengage ment of the ribs and grooves in thehorizow tal meeting faces of the bloc is of the several courses,bviousiy, mortnr or cement muy be used where desired. The door frslmesare preferabiy made of such dimensions :is to correspond in height withthe height of the multiple of block units, the widtli being equei to thewidth of e single block unit, nitholigli this may be varied :is founddesir-.1- ble and 'pruutiruble- The haii' hi; its :we use@ :nljuwui tothe door feines, :iK muy be found ni-wssnrj; to preserve the iruopurailinenwn oi' ihn blocks in the sere-mi courses. ,snl Non bioiiis niniliui'f blocke mi jacent to eau-li door freine are engdgeil with thegrooves in the side mui top portions of seid door fiumi-wf, which letterwiii time be. held with peri'uci :wrm-il) with respect to the luiihiixlgliiovks, while the for rd or rearward dieglcfwinoot oiy seid bloei: Wiiilikewiev be lai'vxf'nmi,

hen properly iu'ui und :issenilfiieii n. com pieu* rii'cuinr orvlvliinirionl wail structure wiii be produrmi b v the improved buildingbioelis, ,mid uio-iis iwiug ussemiiiod in Such u fmrliion as to orcapable of resisting u voxv lie-inv internal iirseure without liabilityof cracking or being disassembled or @then wise injured.

The construction is simple und inexpem sive and thoroughly' prueticniand useful for the purposes for which i1; is intended.

Having time described the invention,

what is iflciinieil us new, iS:--

A building block of reunie shape having horizontal top und bottom fecesund provided with projec'lionsut diagonally oppo Site corin'frr-sthereof, seid. proietctions having wrticiil porfomtioize, undimi-irontnliy dief posed reinforcing rods embedded in sind block, eur-limd having e terminal conn ciiiing with ihr vertical npertnre in one ofthe proie tiene funi eau-lz rod having its opposite ruil beni: to forninn singular projee tion,

in testin'ionja hereof I :iilix my signature in presence o? twowitnesses.

LOUS J. KRBS.

W itiwsees ii. l". NEWMAN, D. M. AHILL.

